Sub-components of the 5.7, 7.7, 11.3, 12.7 and 16-18 μm bands exhibit distinct spatial distributions in NGC 7023, indicating at least two different populations of carbonaceous emission carriers.
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3 Pith papers cite this work. Polarity classification is still indexing.
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PAH charge states peak with cations in the atomic PDR and neutrals in HII and molecular regions, with average sizes of 60-74 carbon atoms, indicating top-down formation near the ionization front and bottom-up in the molecular cloud.
JWST MIRI-MRS data from the Orion Bar PDR show that the 6.2/11.2 micron AIB ratio is the most reliable proxy for PAH ionization fraction while 6.2/8.6 and 7.7/8.6 ratios trace PAH size, with 8.6 and 11.0 microns carried by large compact cations.
citing papers explorer
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JWST observations of photodissociation regions. IV. Carbonaceous emission band sub-components in NGC 7023 have distinct spatial distributions
Sub-components of the 5.7, 7.7, 11.3, 12.7 and 16-18 μm bands exhibit distinct spatial distributions in NGC 7023, indicating at least two different populations of carbonaceous emission carriers.
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PDRs4All: XVIII. The evolution of the PAH ionisation and PAH size distribution across the Orion Bar
PAH charge states peak with cations in the atomic PDR and neutrals in HII and molecular regions, with average sizes of 60-74 carbon atoms, indicating top-down formation near the ionization front and bottom-up in the molecular cloud.
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PDRs4All XIX. The 6 to 9 $\mu$m region as a probe of PAH charge and size in the Orion Bar
JWST MIRI-MRS data from the Orion Bar PDR show that the 6.2/11.2 micron AIB ratio is the most reliable proxy for PAH ionization fraction while 6.2/8.6 and 7.7/8.6 ratios trace PAH size, with 8.6 and 11.0 microns carried by large compact cations.